It's tough for sure and I think it's okay to talk from time to time.
however, there is a right way and a wrong way. The wrong way is "why aren't you doing X,Y,Z" or getting mad with a snide comment or being accusatory.
The right way is to say "I'm feeling good about the general direction of our marriage, how do you feel?" I think something like that is fine. If she does something that upsets you ... like the comment, I think it's okay to talk about it. Something like, "I think we are doing well and working on rebuilding our marriage and it hurts me when you say that to a third party."
No need to really talk about at length. But I'm sure others have ideas too.
i'm still learning this too. I think it will get easier.
Patience is bitter, but its fruit is sweet. --Jean Jacques Rousseau.